CN104442410B - A kind of control method of emergency braking system for electric vehicle - Google Patents
A kind of control method of emergency braking system for electric vehicle Download PDFInfo
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- CN104442410B CN104442410B CN201410670605.1A CN201410670605A CN104442410B CN 104442410 B CN104442410 B CN 104442410B CN 201410670605 A CN201410670605 A CN 201410670605A CN 104442410 B CN104442410 B CN 104442410B
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- emergency braking
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- electric vehicle
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Abstract
The present invention provides a kind of emergency braking system and its control method for electric vehicle, emergency braking system includes entire car controller, anti-blocking brake system, electric machine controller and driving motor, the entire car controller is connected with emergency stop button, the anti-blocking brake system is connected with the entire car controller, and the entire car controller is connected by the electric machine controller with the driving motor；Emergency braking reminding unit is further included, the emergency braking reminding unit is connected with the entire car controller, for the emergency braking condition of current vehicle to be informed interior driver and passenger.The emergency braking system of the present invention can make electric vehicle take emergency braking measure in brake fade, under the premise of hardly complete vehicle quality and additional elements are increased, effectively prevent the accident caused by brake fade.
Description
Technical field
The present invention relates to the brake control arts of electric vehicle, and in particular to a kind of emergency braking system for electric vehicle
System and its control method.
Background technology
For the braking system of vehicle, in addition to set comprising " make automobile in traveling according to driver requirement into
Row forced deceleration even stops；Make the automobile of the stagnation of movement steadily halt under the conditions of different kinds of roads；Make the automobile speed of descent run
Conventional braking system including degree holding stabilization " function, corresponding to the situation of service brake failure, is usually also added on automobile
Ensure that automobile remains to realize the secondary brake system for slowing down or stopping, i.e. emergency braking system.
Current secondary brake system is normally independent of conventional braking system, also can be by the way that conventional braking system is improved
Tool, make its there are two or multiple circuits (at this time emergency braking system be the equal of conventional braking system a circuit or one
Point), after wherein some circuit breaks down and loses braking function, remaining circuit stills provide braking, so as to fulfill urgent
The effect of braking.
But the design of current secondary brake system and control are relative complex, and need to increase many parts, such as
The secondary brake system of double loop pattern needs to increase by second set of vacuum booster, master cylinder, brake combination valve and compound tube
Road etc. not only increases the arrangement difficulty of vehicle, and complete vehicle quality can also increase therewith, increases the manufacture cost of vehicle, influences
The driving economy of vehicle.
And current vehicle is not equipped with emergency braking apparatus generally, when the feelings of brake fade occur in the process of moving for automobile
During condition, it is common practice to which driver provides smaller brake force realization by parking braking and vehicle is braked, and both passes through
The mode to pull the hand brake provides smaller brake force temporarily, so that vehicle accelerates to stop, but such strategy is due to parking braking
Power is too small to cause braking distance longer, and there are considerable degree of collision hidden danger, especially during running at high speed, pass through parking
The strategy braked easily causes vehicle slip.
Invention content
In view of this, the present invention provides a kind of emergency braking system and its control method for electric vehicle, it is intended to when
The effective brake of electric vehicle is realized under conventional brake failure state.
The technical solution adopted by the present invention is specially：
A kind of emergency braking system for electric vehicle, including entire car controller, anti-blocking brake system, motor control
Device and driving motor, the entire car controller are connected with emergency stop button, the anti-blocking brake system and the vehicle control
Device processed is connected, and the entire car controller is connected by the electric machine controller with the driving motor.
Above-mentioned in the emergency braking system of electric vehicle, further including emergency braking reminding unit, the urgent system
Dynamic reminding unit is connected with the entire car controller, for the emergency braking condition of current vehicle to be informed interior driving people
Member.
Above-mentioned in the emergency braking system of electric vehicle, the emergency braking reminding unit include display instrument and
Audio device, the entire car controller communicate respectively with the display instrument and the audio device.
A kind of control method of emergency braking system for electric vehicle, the specific steps are：
When the situation of brake fade occurs for electric vehicle, driver triggers emergency stop button, by the letter of brake fade
Breath is sent to entire car controller；
After the signal for receiving emergency stop button unlatching, entire car controller sends peak torque to electric machine controller and refers to
It enables, electric machine controller makes driving motor complete braking maneuver according to the torque capacity instruction received；
When the braking anti-lock sensor of anti-blocking brake system detect vehicle speed be 0 when, entire car controller to
Electric machine controller sends 0 torque command, and electric machine controller stops sending out driving motor the control of braking maneuver.
In the control method of the above-mentioned emergency braking system for electric vehicle, the maximum of peak torque instruction is turned round
Square direction is opposite with the direction of rotation of driving motor.
In the control method of the above-mentioned emergency braking system for electric vehicle, the vehicle vehicle controller and urgent system
Dynamic reminding unit communication, interior driver and passenger are informed by the emergency braking condition of current vehicle.
In the control method of the above-mentioned emergency braking system for electric vehicle, the emergency braking reminding unit includes
Display instrument and audio device, the vehicle vehicle controller to display instrument send prompt message, the vehicle vehicle controller to
Audio device sends prompt tone.
The beneficial effect comprise that：
For the electric vehicle including pure electric automobile and hybrid vehicle, emergency braking apparatus of the invention can
Under conventional brake failure state, emergency stop button is triggered by driver, is made at vehicle control unit controls driving motor
In peak torque generating state, simulating brake effect efficiently avoids the traffic accident caused by brake fade.And this hair
Bright scheme is realized simply, is almost not required to additionally increase manufacture cost.
Description of the drawings
When considered in conjunction with the accompanying drawings, the present invention can be more completely more fully understood.Attached drawing described herein is used for providing
A further understanding of the present invention, embodiment and its explanation do not constitute improper limitations of the present invention for explaining the present invention.
Fig. 1 is a kind of structure diagram of emergency braking system for electric vehicle of the invention.
In figure：1st, emergency stop button 2, anti-blocking brake system (ABS), 3, entire car controller (VCU), 4, motor control
Device (MCU) processed, 5, driving motor, 6, display instrument 7, audio device.
Specific embodiment
Technical scheme of the present invention is described in further detail with reference to the accompanying drawings and embodiments.
A kind of emergency braking system for electric vehicle as shown in Figure 1, including entire car controller 3, braking anti-lock
System 2, electric machine controller 4, driving motor and the emergency braking reminding unit being made of display instrument 6 and audio device 7,
Entire car controller 3 is connected with emergency stop button 1, and anti-blocking brake system 2 is connected with entire car controller 3, entire car controller 3
It is connected by electric machine controller 4 with driving motor.
The control method of above-mentioned emergency braking system is specially：
When the situation of brake fade occurs for electric vehicle, driver triggers emergency stop button 1 first, by promptly making
The information of brake fade is sent to entire car controller 3 by unlatching/shutdown signal of dynamic button 1；Entire car controller 3 is receiving tightly
It is opposite with the direction of rotation of driving motor 5 to the transmission of electric machine controller 4 by CAN bus after the signal that anxious stop button 1 is opened
Peak torque instruction, electric machine controller 4 according to receive torque capacity instruction make driving motor 5 complete braking maneuver；When
The braking anti-lock sensor of anti-blocking brake system 2 detect vehicle speed signal be 0 when, show braking completed,
Entire car controller 3 sends 0 torque command to electric machine controller 4, and electric machine controller 4 stops sending out system to driving motor 5 immediately
The control of action.
While brake fade occurs, display instrument 6 transmission of the vehicle vehicle controller 4 to emergency braking reminding unit carries
Show information, and prompt tone is sent to the audio device 7 of emergency braking reminding unit, the emergency braking condition of current vehicle informs vehicle
Interior driver and passenger.
As described above, the embodiment of the present invention is explained in detail, it is clear that as long as essentially without this hair is detached from
Bright inventive point and effect, will be readily apparent to persons skilled in the art deformation, also be all contained in the guarantor of the present invention
Within the scope of shield.
Claims (3)
1. a kind of control method of emergency braking system for electric vehicle, which is characterized in that the specific steps are：
When the situation of brake fade occurs for electric vehicle, driver triggers emergency stop button, and the information of brake fade is sent out
It send to entire car controller；
After the signal for receiving emergency stop button unlatching, entire car controller sends peak torque instruction, electricity to electric machine controller
Machine controller makes driving motor complete braking maneuver according to the peak torque instruction received, wherein, the peak torque instruction
Peak torque direction it is opposite with the direction of rotation of driving motor；
When it is 0 that the braking anti-lock sensor of anti-blocking brake system, which detects the speed of vehicle, entire car controller is to motor
Controller sends 0 torque command, and electric machine controller stops sending out driving motor the control of braking maneuver.
2. the control method of the emergency braking system according to claim 1 for electric vehicle, which is characterized in that described
Entire car controller is communicated with emergency braking reminding unit, and the emergency braking condition of current vehicle is informed interior driver and passenger.
3. the control method of the emergency braking system according to claim 2 for electric vehicle, which is characterized in that described
Emergency braking reminding unit includes display instrument and audio device, and the entire car controller sends prompt message to display instrument,
The entire car controller sends prompt tone to audio device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410670605.1A CN104442410B (en) | 2014-11-20 | 2014-11-20 | A kind of control method of emergency braking system for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410670605.1A CN104442410B (en) | 2014-11-20 | 2014-11-20 | A kind of control method of emergency braking system for electric vehicle |
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| Publication Number | Publication Date |
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| CN104442410A CN104442410A (en) | 2015-03-25 |
| CN104442410B true CN104442410B (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410670605.1A Active CN104442410B (en) | 2014-11-20 | 2014-11-20 | A kind of control method of emergency braking system for electric vehicle |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107161031A (en) * | 2017-05-11 | 2017-09-15 | 奇瑞汽车股份有限公司 | Electric automobile emergency brake system and control method |
| CN109760518A (en) * | 2017-11-08 | 2019-05-17 | 郑州宇通客车股份有限公司 | Vehicle, emergency brake of vehicle control system and method and emergency braking apparatus for vehicle |
| CN107894562A (en) * | 2017-12-15 | 2018-04-10 | 北斗航天汽车（北京）有限公司 | Automobile circuit plate and its detecting system |
| CN108501733A (en) * | 2018-04-25 | 2018-09-07 | 北京新能源汽车股份有限公司 | Control method, device and the electric vehicle of emergency brake assistance warning function |
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| CN102320293A (en) * | 2011-07-08 | 2012-01-18 | 奇瑞汽车股份有限公司 | Brake protection device of automatic transmission car and control method thereof |
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| CN103448559A (en) * | 2013-08-20 | 2013-12-18 | 联合汽车电子有限公司 | Motor braking control system for pure electric vehicle |
| CN103522915A (en) * | 2013-10-31 | 2014-01-22 | 重庆长安汽车股份有限公司 | Torque control method for preventing backward slipping of blade electric vehicle on slope |
| CN103863293A (en) * | 2013-08-12 | 2014-06-18 | 中国科学院合肥物质科学研究院 | Vehicle parking braking system and control method for same |
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| JP2007072870A (en) * | 2005-09-08 | 2007-03-22 | Nippon Yusoki Co Ltd | Control system for automated guided vehicle |
| CN101474965B (en) * | 2009-01-20 | 2010-11-10 | 清华大学 | Active brake control method of hybrid power electric automobile |
| FR2966115B1 (en) * | 2010-10-19 | 2012-10-26 | Renault Sa | METHOD AND SYSTEM FOR BRAKING A MOTOR VEHICLE WITH ELECTRICAL OR HYBRID TRACTION |
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| CN102320293A (en) * | 2011-07-08 | 2012-01-18 | 奇瑞汽车股份有限公司 | Brake protection device of automatic transmission car and control method thereof |
| CN203332092U (en) * | 2013-06-09 | 2013-12-11 | 北京汽车股份有限公司 | Dynamic braking control device and vehicle |
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| CN104442410A (en) | 2015-03-25 |
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